A343933 - cp's OEIS frontend

A343933 a(n) = (Sum_{k=1..n} (-k)^k) mod n.

n	a(n)
1	0
2	1
3	0
4	0
5	2
6	5
7	6
8	4
9	8
10	7
11	0
12	4
13	10
14	3
15	10
16	4
17	12
18	15
19	3
20	4
21	3
22	19
23	2
24	20
25	11
26	3
27	23
28	16
29	15
30	1
31	11
32	4
33	1
34	9
35	24
36	12
37	1
38	11
39	36
40	28
41	26
42	41
43	5
44	12
45	20
46	45
47	26
48	4
49	5
50	35
51	16
52	32
53	48
54	45
55	23
56	44
57	51
58	23
59	3
60	32
61	29
62	25
63	44
64	4
65	24
66	19
67	64
68	56
69	28
70	29
71	44
72	60
73	54
74	71
75	12
76	24
77	51
78	65
79	55
80	36
81	68
82	21
83	1
84	40
85	38

[0, 1, 0, 0, 2, 5, 6, 4, 8, 7, 0, 4, 10, 3, 10, 4, 12, 15, 3, 4, 3, 19, 2, 20, 11, 3, 23, 16, 15, 1, 11, 4, 1, 9, 24, 12, 1, 11, 36, 28, 26, 41, 5, 12, 20, 45, 26, 4, 5, 35, 16, 32, 48, 45, 23, 44, 51, 23, 3, 32, 29, 25, 44, 4, 24, 19, 64, 56, 28, 29, 44, 60, 54, 71, 12, 24, 51, 65, 55, 36, 68, 21, 1, 40, 38]

cp's OEIS Frontend

A343933 a(n) = (Sum_{k=1..n} (-k)^k) mod n.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	0
5	2
6	5
7	6
8	4
9	8
10	7
11	0
12	4
13	10
14	3
15	10
16	4
17	12
18	15
19	3
20	4
21	3
22	19
23	2
24	20
25	11
26	3
27	23
28	16
29	15
30	1
31	11
32	4
33	1
34	9
35	24
36	12
37	1
38	11
39	36
40	28
41	26
42	41
43	5
44	12
45	20
46	45
47	26
48	4
49	5
50	35
51	16
52	32
53	48
54	45
55	23
56	44
57	51
58	23
59	3
60	32
61	29
62	25
63	44
64	4
65	24
66	19
67	64
68	56
69	28
70	29
71	44
72	60
73	54
74	71
75	12
76	24
77	51
78	65
79	55
80	36
81	68
82	21
83	1
84	40
85	38

n	a(n)
1	0
2	1
3	0
4	0
5	2
6	5
7	6
8	4
9	8
10	7
11	0
12	4
13	10
14	3
15	10
16	4
17	12
18	15
19	3
20	4
21	3
22	19
23	2
24	20
25	11
26	3
27	23
28	16
29	15
30	1
31	11
32	4
33	1
34	9
35	24
36	12
37	1
38	11
39	36
40	28
41	26
42	41
43	5
44	12
45	20
46	45
47	26
48	4
49	5
50	35
51	16
52	32
53	48
54	45
55	23
56	44
57	51
58	23
59	3
60	32
61	29
62	25
63	44
64	4
65	24
66	19
67	64
68	56
69	28
70	29
71	44
72	60
73	54
74	71
75	12
76	24
77	51
78	65
79	55
80	36
81	68
82	21
83	1
84	40
85	38

n	a(n)
1	0
2	1
3	0
4	0
5	2
6	5
7	6
8	4
9	8
10	7
11	0
12	4
13	10
14	3
15	10
16	4
17	12
18	15
19	3
20	4
21	3
22	19
23	2
24	20
25	11
26	3
27	23
28	16
29	15
30	1
31	11
32	4
33	1
34	9
35	24
36	12
37	1
38	11
39	36
40	28
41	26
42	41
43	5
44	12
45	20
46	45
47	26
48	4
49	5
50	35
51	16
52	32
53	48
54	45
55	23
56	44
57	51
58	23
59	3
60	32
61	29
62	25
63	44
64	4
65	24
66	19
67	64
68	56
69	28
70	29
71	44
72	60
73	54
74	71
75	12
76	24
77	51
78	65
79	55
80	36
81	68
82	21
83	1
84	40
85	38